/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:26:42,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:26:42,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:26:42,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:26:42,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:26:42,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:26:42,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:26:42,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:26:42,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:26:42,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:26:42,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:26:42,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:26:42,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:26:42,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:26:42,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:26:42,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:26:42,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:26:42,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:26:42,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:26:42,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:26:42,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:26:42,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:26:42,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:26:42,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:26:42,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:26:42,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:26:42,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:26:42,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:26:42,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:26:42,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:26:42,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:26:42,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:26:42,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:26:42,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:26:42,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:26:42,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:26:42,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:26:42,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:26:42,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:26:42,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:26:42,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:26:42,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 18:26:42,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:26:42,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:26:42,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:26:42,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:26:42,984 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:26:42,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:26:42,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:26:42,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:26:42,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:26:42,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:26:42,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:26:42,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:26:42,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:26:42,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:26:42,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:26:42,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:26:42,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:26:42,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:26:42,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:26:42,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:26:42,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:26:42,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:26:42,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:26:42,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:26:42,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:26:42,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:26:42,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:26:42,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:26:42,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:26:42,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:26:43,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:26:43,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:26:43,363 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:26:43,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:26:43,365 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:26:43,366 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-12 18:26:43,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf09f6c46/8b64a81fd6f046ea815a0a8f98a77455/FLAG66a73eb4d [2020-10-12 18:26:43,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:26:43,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-12 18:26:43,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf09f6c46/8b64a81fd6f046ea815a0a8f98a77455/FLAG66a73eb4d [2020-10-12 18:26:44,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf09f6c46/8b64a81fd6f046ea815a0a8f98a77455 [2020-10-12 18:26:44,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:26:44,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:26:44,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:26:44,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:26:44,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:26:44,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bc374b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44, skipping insertion in model container [2020-10-12 18:26:44,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:26:44,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:26:44,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:26:44,579 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:26:44,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:26:44,621 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:26:44,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44 WrapperNode [2020-10-12 18:26:44,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:26:44,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:26:44,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:26:44,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:26:44,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (1/1) ... [2020-10-12 18:26:44,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:26:44,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:26:44,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:26:44,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:26:44,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:26:44,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:26:44,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:26:44,818 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-12 18:26:44,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:26:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:26:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:26:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-12 18:26:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:26:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:26:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:26:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:26:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:26:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:26:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:26:45,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:26:45,113 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:26:45,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:26:45 BoogieIcfgContainer [2020-10-12 18:26:45,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:26:45,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:26:45,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:26:45,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:26:45,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:26:44" (1/3) ... [2020-10-12 18:26:45,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74602d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:26:45, skipping insertion in model container [2020-10-12 18:26:45,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:26:44" (2/3) ... [2020-10-12 18:26:45,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74602d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:26:45, skipping insertion in model container [2020-10-12 18:26:45,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:26:45" (3/3) ... [2020-10-12 18:26:45,136 INFO L109 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2020-10-12 18:26:45,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:26:45,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:26:45,171 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:26:45,199 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:26:45,200 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:26:45,200 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:26:45,200 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:26:45,200 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:26:45,200 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:26:45,201 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:26:45,201 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:26:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 18:26:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:26:45,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:26:45,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:26:45,254 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:26:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:26:45,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-12 18:26:45,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:26:45,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846890848] [2020-10-12 18:26:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:26:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:45,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:47,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:47,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:26:47,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:26:47,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-12 18:26:47,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:26:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:26:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:26:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 18:26:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:26:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:47,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:47,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:26:47,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:26:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:26:47,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:26:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:26:47,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:26:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:47,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:47,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 18:26:47,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:26:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:26:47,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:26:47,868 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 5 [2020-10-12 18:26:47,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:26:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:47,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:47,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:47,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:47,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 18:26:47,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:47,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:26:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:26:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:48,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:26:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:48,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:48,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:48,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:48,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 18:26:48,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:48,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:26:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:26:48,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:26:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 18:26:48,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846890848] [2020-10-12 18:26:48,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:26:48,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 18:26:48,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548894196] [2020-10-12 18:26:48,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:26:48,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:26:48,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:26:48,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:26:48,193 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 12 states. [2020-10-12 18:26:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:26:48,563 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-12 18:26:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:26:48,565 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-12 18:26:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:26:48,577 INFO L225 Difference]: With dead ends: 83 [2020-10-12 18:26:48,577 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 18:26:48,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:26:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 18:26:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-12 18:26:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:26:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-12 18:26:48,640 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-12 18:26:48,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:26:48,640 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-12 18:26:48,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:26:48,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-12 18:26:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 18:26:48,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:26:48,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:26:48,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:26:48,645 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:26:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:26:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash -883673527, now seen corresponding path program 1 times [2020-10-12 18:26:48,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:26:48,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544143535] [2020-10-12 18:26:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:26:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:50,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:26:50,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:26:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1649 [2020-10-12 18:26:50,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:26:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:26:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:26:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:50,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:26:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:50,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:26:50,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:26:50,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:26:50,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:26:50,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:50,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:26:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:26:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:50,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:50,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:26:50,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:26:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:26:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:50,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:26:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:50,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:26:50,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:26:50,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:26:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:26:50,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:26:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:50,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:50,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:26:50,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:26:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:26:50,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:26:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:26:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:26:50,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544143535] [2020-10-12 18:26:50,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:26:50,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:26:50,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34536255] [2020-10-12 18:26:50,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:26:50,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:26:50,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:26:50,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:26:50,463 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-12 18:26:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:26:50,576 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-12 18:26:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:26:50,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 18:26:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:26:50,578 INFO L225 Difference]: With dead ends: 58 [2020-10-12 18:26:50,578 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 18:26:50,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:26:50,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 18:26:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 18:26:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 18:26:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 18:26:50,587 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-12 18:26:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:26:50,587 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 18:26:50,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:26:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 18:26:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 18:26:50,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:26:50,589 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:26:50,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:26:50,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:26:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:26:50,590 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-12 18:26:50,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:26:50,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890368758] [2020-10-12 18:26:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:26:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:50,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:26:55,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:26:55,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:26:55,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:26:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-12 18:26:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:26:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:55,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:26:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:26:55,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:26:55,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:26:55,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:26:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:26:55,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:26:55,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:55,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:26:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:26:55,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:55,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 18:26:55,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:26:55,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:55,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:26:55,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 18:26:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:26:55,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:26:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 18:26:55,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:26:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:26:55,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:55,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:26:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:55,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:26:55,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:26:55,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:26:55,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 18:26:55,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:26:55,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:26:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:26:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:26:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:26:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 18:26:55,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890368758] [2020-10-12 18:26:55,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:26:55,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:26:55,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191333050] [2020-10-12 18:26:55,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:26:55,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:26:55,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:26:55,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:26:55,860 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-12 18:26:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:26:55,971 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-12 18:26:55,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:26:55,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 18:26:55,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:26:55,973 INFO L225 Difference]: With dead ends: 52 [2020-10-12 18:26:55,973 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 18:26:55,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:26:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 18:26:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 18:26:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 18:26:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 18:26:55,980 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-12 18:26:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:26:55,981 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 18:26:55,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:26:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 18:26:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 18:26:55,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:26:55,983 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:26:55,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:26:55,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:26:55,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:26:55,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-12 18:26:55,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:26:55,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516605226] [2020-10-12 18:26:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:26:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:26:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:56,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:56,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:26:57,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:00,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:00,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:27:00,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:27:00,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:27:00,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:27:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:01,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:01,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:01,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:27:01,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:01,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:01,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:01,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:27:01,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:01,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:01,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:27:01,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:01,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 18:27:01,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:01,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:01,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:27:01,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:01,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 18:27:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:01,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:27:01,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 18:27:01,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:01,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:27:01,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:01,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:27:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:01,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:01,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:27:01,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:01,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 18:27:01,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:01,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:01,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:01,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:27:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 18:27:01,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516605226] [2020-10-12 18:27:01,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:01,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:27:01,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641717512] [2020-10-12 18:27:01,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:27:01,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:01,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:27:01,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:27:01,297 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-12 18:27:01,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:01,491 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-12 18:27:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:27:01,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 18:27:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:01,495 INFO L225 Difference]: With dead ends: 56 [2020-10-12 18:27:01,495 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 18:27:01,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:27:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 18:27:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 18:27:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:27:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 18:27:01,508 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-12 18:27:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:01,509 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 18:27:01,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:27:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 18:27:01,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 18:27:01,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:01,514 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:01,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:27:01,515 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:01,517 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-12 18:27:01,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:01,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885765588] [2020-10-12 18:27:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:03,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:06,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:27:06,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:27:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:27:06,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:27:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 18:27:06,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:06,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:06,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:06,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:06,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:06,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:06,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:06,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:06,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 18:27:06,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:27:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:06,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:06,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 18:27:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:06,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:06,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:06,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:06,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:27:06,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:27:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:06,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 18:27:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:06,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:06,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 18:27:06,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:27:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 18:27:06,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885765588] [2020-10-12 18:27:06,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:06,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:27:06,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329322190] [2020-10-12 18:27:06,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:27:06,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:06,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:27:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:27:06,797 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 18:27:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:06,950 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 18:27:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:27:06,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 18:27:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:06,951 INFO L225 Difference]: With dead ends: 60 [2020-10-12 18:27:06,951 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:27:06,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:27:06,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:27:06,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 18:27:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 18:27:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 18:27:06,961 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 18:27:06,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:06,962 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 18:27:06,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:27:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 18:27:06,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 18:27:06,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:06,965 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:06,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:27:06,966 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:06,967 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-12 18:27:06,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:06,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472665258] [2020-10-12 18:27:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:07,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:11,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:11,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:27:11,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:27:11,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:27:11,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:27:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 18:27:11,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:27:11,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:12,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:27:12,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:12,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 18:27:12,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:27:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:27:12,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:12,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 18:27:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:27:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 18:27:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:12,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:27:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:27:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:12,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 18:27:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:12,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:12,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:27:12,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:12,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 18:27:12,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:27:12,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:12,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:27:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 18:27:12,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472665258] [2020-10-12 18:27:12,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:12,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:27:12,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398009204] [2020-10-12 18:27:12,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:27:12,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:12,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:27:12,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:27:12,213 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 18:27:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:12,462 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 18:27:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:27:12,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 18:27:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:12,463 INFO L225 Difference]: With dead ends: 64 [2020-10-12 18:27:12,463 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 18:27:12,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:27:12,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 18:27:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 18:27:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:27:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 18:27:12,474 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 18:27:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:12,474 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 18:27:12,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:27:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 18:27:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:27:12,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:12,475 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:12,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:27:12,476 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:12,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:12,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-12 18:27:12,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:12,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179905326] [2020-10-12 18:27:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:12,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:17,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:27:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:27:17,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:17,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:17,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:17,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:17,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:17,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:17,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:17,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:17,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:17,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:17,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:17,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:17,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 18:27:17,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:17,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:27:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:17,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:17,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 18:27:17,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:17,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:27:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:17,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:17,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:17,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:17,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 18:27:17,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:17,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:17,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:27:17,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179905326] [2020-10-12 18:27:17,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:17,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:27:17,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856117367] [2020-10-12 18:27:17,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:27:17,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:17,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:27:17,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:27:17,817 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 18:27:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:18,007 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 18:27:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:27:18,008 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 18:27:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:18,009 INFO L225 Difference]: With dead ends: 68 [2020-10-12 18:27:18,009 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 18:27:18,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:27:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 18:27:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 18:27:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 18:27:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 18:27:18,016 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 18:27:18,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:18,017 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 18:27:18,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:27:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 18:27:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 18:27:18,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:18,019 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:18,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:27:18,020 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:18,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:18,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-12 18:27:18,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:18,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77002844] [2020-10-12 18:27:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:18,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:23,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:27:23,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:23,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:27:23,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:23,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:27:23,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 18:27:23,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:23,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:23,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:23,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:23,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:27:23,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:23,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:27:23,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 18:27:23,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:27:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:23,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 18:27:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:23,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:23,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:27:23,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:23,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 18:27:23,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:23,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:27:23,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:27:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:23,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:27:23,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 18:27:23,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:27:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:23,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 18:27:23,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77002844] [2020-10-12 18:27:23,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:23,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:27:23,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775154530] [2020-10-12 18:27:23,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:27:23,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:23,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:27:23,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:27:23,363 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 18:27:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:23,620 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 18:27:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:27:23,621 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 18:27:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:23,622 INFO L225 Difference]: With dead ends: 72 [2020-10-12 18:27:23,622 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 18:27:23,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:27:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 18:27:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 18:27:23,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 18:27:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 18:27:23,630 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 18:27:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:23,630 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 18:27:23,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:27:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 18:27:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:27:23,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:23,631 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:23,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:27:23,631 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:23,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:23,632 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-12 18:27:23,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:23,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595832373] [2020-10-12 18:27:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:23,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:28,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:28,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 18:27:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:27:28,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:27:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 18:27:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:27:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:28,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:28,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:28,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:28,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:28,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:28,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:28,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:28,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:28,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:28,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:28,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:27:28,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 18:27:28,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:27:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:27:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:28,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 18:27:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:28,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:28,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:28,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:27:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:27:28,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:27:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:28,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:27:28,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:27:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:28,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:28,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:28,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:27:28,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:28,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 18:27:28,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:27:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:28,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:27:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 18:27:28,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595832373] [2020-10-12 18:27:28,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:28,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:27:28,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435126277] [2020-10-12 18:27:28,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:27:28,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:28,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:27:28,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:27:28,991 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 18:27:29,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:29,291 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 18:27:29,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:27:29,292 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 18:27:29,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:29,292 INFO L225 Difference]: With dead ends: 76 [2020-10-12 18:27:29,293 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 18:27:29,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:27:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 18:27:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 18:27:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 18:27:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 18:27:29,302 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 18:27:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:29,303 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 18:27:29,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:27:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 18:27:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 18:27:29,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:29,304 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:29,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:27:29,305 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-12 18:27:29,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:29,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991846808] [2020-10-12 18:27:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:29,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:29,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:34,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:34,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:27:34,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:27:34,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:34,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:34,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:34,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:34,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:34,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:34,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:34,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:34,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:34,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:34,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:34,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:34,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:34,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:27:34,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 18:27:34,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:27:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:34,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:34,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:27:34,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 18:27:34,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:34,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:27:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:34,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:34,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:34,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:34,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:27:34,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 18:27:34,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:34,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:34,664 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 18:27:34,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991846808] [2020-10-12 18:27:34,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:34,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:27:34,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299402065] [2020-10-12 18:27:34,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:27:34,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:34,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:27:34,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:27:34,667 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 18:27:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:34,980 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 18:27:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:27:34,981 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 18:27:34,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:34,982 INFO L225 Difference]: With dead ends: 80 [2020-10-12 18:27:34,983 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 18:27:34,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:27:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 18:27:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 18:27:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 18:27:34,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 18:27:34,989 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 18:27:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:34,989 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 18:27:34,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:27:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 18:27:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 18:27:34,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:34,990 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:34,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:27:34,991 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:34,991 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-12 18:27:34,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:34,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605630167] [2020-10-12 18:27:34,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:40,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:40,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:40,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:40,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:27:40,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 18:27:40,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:40,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:27:40,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 18:27:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:40,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:27:40,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 18:27:40,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:40,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:27:40,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:40,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:27:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:40,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:27:40,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 18:27:40,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:27:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 18:27:40,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605630167] [2020-10-12 18:27:40,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:40,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:27:40,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276133463] [2020-10-12 18:27:40,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:27:40,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:40,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:27:40,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:27:40,402 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 18:27:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:40,695 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 18:27:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:27:40,695 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 18:27:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:40,696 INFO L225 Difference]: With dead ends: 84 [2020-10-12 18:27:40,696 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 18:27:40,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:27:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 18:27:40,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 18:27:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 18:27:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 18:27:40,703 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 18:27:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:40,704 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 18:27:40,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:27:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 18:27:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 18:27:40,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:40,705 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:40,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:27:40,705 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-12 18:27:40,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:40,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318473359] [2020-10-12 18:27:40,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:40,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:45,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 18:27:45,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:45,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:27:45,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:27:45,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:27:45,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:45,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:45,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:45,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:45,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:45,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:27:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 18:27:45,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:27:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:45,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 18:27:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:45,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:46,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:27:46,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:46,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 18:27:46,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:46,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:27:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:46,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:27:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:46,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:46,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:27:46,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:46,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 18:27:46,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:27:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 18:27:46,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318473359] [2020-10-12 18:27:46,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:46,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:27:46,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544578214] [2020-10-12 18:27:46,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:27:46,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:46,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:27:46,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:27:46,121 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 18:27:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:46,468 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 18:27:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:27:46,471 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 18:27:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:46,472 INFO L225 Difference]: With dead ends: 88 [2020-10-12 18:27:46,472 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 18:27:46,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:27:46,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 18:27:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 18:27:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 18:27:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 18:27:46,478 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 18:27:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:46,478 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 18:27:46,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:27:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 18:27:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:27:46,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:46,480 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:46,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:27:46,480 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:46,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-12 18:27:46,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:46,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873087367] [2020-10-12 18:27:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:51,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:27:51,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:27:51,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:27:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:51,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:51,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:51,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:51,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:51,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:51,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:51,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:51,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:51,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:27:51,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 18:27:51,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:27:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:51,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:27:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:51,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:51,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:51,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:27:51,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 18:27:51,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:27:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:51,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:51,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:27:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:51,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:51,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:27:51,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 18:27:51,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:27:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:51,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 18:27:51,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873087367] [2020-10-12 18:27:51,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:51,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:27:51,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965713353] [2020-10-12 18:27:51,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:27:51,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:51,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:27:51,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:27:51,936 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 18:27:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:52,311 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 18:27:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:27:52,312 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 18:27:52,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:52,313 INFO L225 Difference]: With dead ends: 92 [2020-10-12 18:27:52,313 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 18:27:52,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:27:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 18:27:52,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 18:27:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 18:27:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 18:27:52,321 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 18:27:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:52,321 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 18:27:52,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:27:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 18:27:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 18:27:52,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:52,325 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:52,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:27:52,326 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-12 18:27:52,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:52,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593209679] [2020-10-12 18:27:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:57,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:57,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 18:27:57,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:27:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:27:57,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:27:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:57,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:27:57,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:57,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:57,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:57,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:57,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:57,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:57,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:57,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:57,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:57,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:57,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:27:57,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-12 18:27:57,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:27:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:27:57,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:57,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 18:27:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:57,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:57,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:57,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:27:57,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 18:27:57,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:27:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:27:57,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:57,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 18:27:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:57,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:58,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:27:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 18:27:58,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:27:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:27:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 18:27:58,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593209679] [2020-10-12 18:27:58,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:58,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:27:58,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293868568] [2020-10-12 18:27:58,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:27:58,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:58,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:27:58,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:27:58,227 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 18:27:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:58,723 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 18:27:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:27:58,723 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 18:27:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:58,724 INFO L225 Difference]: With dead ends: 96 [2020-10-12 18:27:58,725 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 18:27:58,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:27:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 18:27:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 18:27:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 18:27:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 18:27:58,732 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 18:27:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:58,733 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 18:27:58,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:27:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 18:27:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 18:27:58,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:58,734 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:58,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:27:58,735 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:58,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:58,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-12 18:27:58,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:58,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198076797] [2020-10-12 18:27:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:03,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 18:28:03,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 18:28:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:28:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:03,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:03,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:03,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 18:28:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:28:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 18:28:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-12 18:28:04,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:28:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:04,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:28:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:04,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:04,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:04,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 18:28:04,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:28:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:04,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 18:28:04,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198076797] [2020-10-12 18:28:04,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:04,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:28:04,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358407761] [2020-10-12 18:28:04,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:28:04,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:04,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:28:04,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:28:04,532 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 18:28:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:04,988 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 18:28:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:28:04,988 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 18:28:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:04,990 INFO L225 Difference]: With dead ends: 100 [2020-10-12 18:28:04,990 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 18:28:04,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:28:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 18:28:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 18:28:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 18:28:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 18:28:05,004 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 18:28:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:05,005 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 18:28:05,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:28:05,005 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 18:28:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 18:28:05,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:05,006 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:05,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:28:05,007 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-12 18:28:05,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:05,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130465240] [2020-10-12 18:28:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:05,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:28:10,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 18:28:10,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:28:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 18:28:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:28:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:10,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:10,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:10,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:28:10,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:10,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 18:28:10,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:28:10,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:10,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:28:10,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:28:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:28:10,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:10,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 18:28:10,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:28:10,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:28:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:28:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:10,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:10,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:10,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:28:10,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:10,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 18:28:10,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:28:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:10,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:28:10,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 18:28:10,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130465240] [2020-10-12 18:28:10,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:10,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:28:10,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091764785] [2020-10-12 18:28:10,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:28:10,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:10,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:28:10,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:28:10,782 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 18:28:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:11,254 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 18:28:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:28:11,255 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 18:28:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:11,257 INFO L225 Difference]: With dead ends: 104 [2020-10-12 18:28:11,257 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 18:28:11,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:28:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 18:28:11,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 18:28:11,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 18:28:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 18:28:11,264 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 18:28:11,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:11,264 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 18:28:11,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:28:11,264 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 18:28:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 18:28:11,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:11,265 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:11,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:28:11,266 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:11,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-12 18:28:11,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:11,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685660202] [2020-10-12 18:28:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:11,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 18:28:16,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:28:16,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:28:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 18:28:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:16,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:16,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:16,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:16,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:16,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:16,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:16,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:16,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:16,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:16,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 18:28:16,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:28:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:16,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 18:28:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:16,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 18:28:16,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:28:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:16,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:16,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:16,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 18:28:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:16,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:16,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:16,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 18:28:16,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:28:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 18:28:16,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685660202] [2020-10-12 18:28:16,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:16,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 18:28:16,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709715708] [2020-10-12 18:28:16,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 18:28:16,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:16,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 18:28:16,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:28:16,907 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 18:28:17,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:17,382 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 18:28:17,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:28:17,382 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 18:28:17,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:17,384 INFO L225 Difference]: With dead ends: 108 [2020-10-12 18:28:17,384 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 18:28:17,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:28:17,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 18:28:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 18:28:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 18:28:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 18:28:17,390 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 18:28:17,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:17,391 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 18:28:17,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 18:28:17,391 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 18:28:17,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 18:28:17,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:17,392 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:17,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:28:17,393 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:17,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-12 18:28:17,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:17,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245978840] [2020-10-12 18:28:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:17,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:22,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:22,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 18:28:22,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:28:22,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:28:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:22,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:28:22,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:22,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:22,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:22,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:22,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:22,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:22,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:22,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:28:22,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 18:28:22,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:28:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:22,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:28:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 18:28:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:22,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:22,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:28:22,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:22,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 18:28:22,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:28:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:22,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:28:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 18:28:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:28:23,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:23,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 18:28:23,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:28:23,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:23,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:28:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-12 18:28:23,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245978840] [2020-10-12 18:28:23,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:23,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:28:23,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061191719] [2020-10-12 18:28:23,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:28:23,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:23,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:28:23,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:28:23,217 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 18:28:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:23,759 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 18:28:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:28:23,760 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 18:28:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:23,761 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:28:23,761 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 18:28:23,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:28:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 18:28:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 18:28:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 18:28:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 18:28:23,769 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 18:28:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:23,769 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 18:28:23,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:28:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 18:28:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 18:28:23,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:23,771 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:23,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:28:23,771 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:23,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:23,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-12 18:28:23,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:23,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983298905] [2020-10-12 18:28:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:28,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:28,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 18:28:28,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 18:28:28,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:28:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 18:28:28,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:28,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:28,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:28,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:28,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:28,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:28,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:28,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:29,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 18:28:29,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:28:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:28:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:29,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:29,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-12 18:28:29,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:28:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:29,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:29,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:28:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:29,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 18:28:29,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:28:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 18:28:29,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983298905] [2020-10-12 18:28:29,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:29,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:28:29,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896587567] [2020-10-12 18:28:29,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:28:29,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:29,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:28:29,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:28:29,633 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 18:28:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:30,187 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 18:28:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:28:30,188 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 18:28:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:30,189 INFO L225 Difference]: With dead ends: 116 [2020-10-12 18:28:30,190 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 18:28:30,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:28:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 18:28:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 18:28:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 18:28:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 18:28:30,198 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 18:28:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:30,200 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 18:28:30,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:28:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 18:28:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 18:28:30,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:30,203 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:30,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:28:30,203 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:30,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-12 18:28:30,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:30,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942723636] [2020-10-12 18:28:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:30,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:30,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:35,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 18:28:35,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:28:35,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:28:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:35,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:35,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:35,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:35,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:35,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:35,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:35,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:35,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:28:35,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 18:28:35,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:28:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:35,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 18:28:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:35,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:36,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:36,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:28:36,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-12 18:28:36,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:28:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 18:28:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:36,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:36,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:28:36,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-12 18:28:36,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:28:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 18:28:36,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942723636] [2020-10-12 18:28:36,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:36,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:28:36,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593855773] [2020-10-12 18:28:36,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:28:36,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:36,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:28:36,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:28:36,333 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 18:28:36,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:36,961 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-10-12 18:28:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:28:36,961 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 18:28:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:36,962 INFO L225 Difference]: With dead ends: 119 [2020-10-12 18:28:36,962 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 18:28:36,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:28:36,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 18:28:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-12 18:28:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 18:28:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 18:28:36,969 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 18:28:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:36,969 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 18:28:36,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:28:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 18:28:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 18:28:36,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:36,971 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:36,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:28:36,972 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:36,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-12 18:28:36,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:36,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575388910] [2020-10-12 18:28:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:37,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 18:28:37,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-12 18:28:37,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:28:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:28:37,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:28:37,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:37,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:37,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:28:37,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:37,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:37,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:37,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:37,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:37,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:37,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:28:37,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:37,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:37,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:37,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:37,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:37,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:37,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:37,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:28:37,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:37,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 18:28:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:37,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:37,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:37,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:37,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:28:37,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:28:37,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:37,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:28:37,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575388910] [2020-10-12 18:28:37,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:28:37,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:28:37,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531589454] [2020-10-12 18:28:37,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:28:37,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:37,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:28:37,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:28:37,898 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 4 states. [2020-10-12 18:28:37,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:37,958 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2020-10-12 18:28:37,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:28:37,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-12 18:28:37,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:37,960 INFO L225 Difference]: With dead ends: 118 [2020-10-12 18:28:37,960 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 18:28:37,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:28:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 18:28:37,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-12 18:28:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 18:28:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-10-12 18:28:37,966 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 152 [2020-10-12 18:28:37,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:37,967 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-10-12 18:28:37,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:28:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-10-12 18:28:37,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 18:28:37,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:37,969 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:37,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:28:37,970 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:37,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:37,970 INFO L82 PathProgramCache]: Analyzing trace with hash 554947425, now seen corresponding path program 1 times [2020-10-12 18:28:37,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:37,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819831453] [2020-10-12 18:28:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:37,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:39,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:39,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 18:28:39,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-12 18:28:39,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:28:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:28:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:28:39,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:39,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:39,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:39,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:39,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:28:39,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:39,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:39,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:39,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:39,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:39,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:39,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:28:39,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:39,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:39,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:39,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:39,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:39,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:39,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:39,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:28:39,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 18:28:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:28:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:28:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3736 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:28:39,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819831453] [2020-10-12 18:28:39,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:39,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:28:39,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765651711] [2020-10-12 18:28:39,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:28:39,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:39,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:28:39,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:28:39,300 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-10-12 18:28:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:39,371 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2020-10-12 18:28:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:28:39,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 18:28:39,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:39,376 INFO L225 Difference]: With dead ends: 120 [2020-10-12 18:28:39,376 INFO L226 Difference]: Without dead ends: 69 [2020-10-12 18:28:39,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:28:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-12 18:28:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-12 18:28:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-12 18:28:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-10-12 18:28:39,381 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 154 [2020-10-12 18:28:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:39,382 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-10-12 18:28:39,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:28:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-10-12 18:28:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-12 18:28:39,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:39,383 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:39,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:28:39,384 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:39,384 INFO L82 PathProgramCache]: Analyzing trace with hash 63139167, now seen corresponding path program 2 times [2020-10-12 18:28:39,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:39,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042811060] [2020-10-12 18:28:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:41,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 18:28:41,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:41,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2038 [2020-10-12 18:28:41,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:28:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:28:41,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:28:41,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:41,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:41,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:41,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:41,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:41,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:41,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:28:41,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:41,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:41,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:41,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:41,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:41,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:41,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:28:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:41,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:41,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 18:28:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3739 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:28:41,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042811060] [2020-10-12 18:28:41,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:41,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:28:41,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011825171] [2020-10-12 18:28:41,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:28:41,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:41,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:28:41,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:28:41,539 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-10-12 18:28:41,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:41,610 INFO L93 Difference]: Finished difference Result 122 states and 127 transitions. [2020-10-12 18:28:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:28:41,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-10-12 18:28:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:41,614 INFO L225 Difference]: With dead ends: 122 [2020-10-12 18:28:41,614 INFO L226 Difference]: Without dead ends: 71 [2020-10-12 18:28:41,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:28:41,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-12 18:28:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-12 18:28:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-12 18:28:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-10-12 18:28:41,623 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 156 [2020-10-12 18:28:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:41,624 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-10-12 18:28:41,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:28:41,625 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-10-12 18:28:41,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 18:28:41,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:41,626 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:41,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:28:41,627 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:41,628 INFO L82 PathProgramCache]: Analyzing trace with hash -118194211, now seen corresponding path program 3 times [2020-10-12 18:28:41,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:41,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499824128] [2020-10-12 18:28:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:44,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:44,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 18:28:44,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2909 [2020-10-12 18:28:44,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:28:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:28:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:28:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:44,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:44,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:44,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:44,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:44,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:44,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:44,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:44,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:44,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:44,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:28:44,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:44,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:44,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:44,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:44,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:44,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:44,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:44,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:28:44,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-12 18:28:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:44,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:44,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:44,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:28:44,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:28:44,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:44,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:28:44,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499824128] [2020-10-12 18:28:44,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:44,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:28:44,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122644161] [2020-10-12 18:28:44,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:28:44,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:44,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:28:44,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:28:44,673 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 7 states. [2020-10-12 18:28:44,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:44,767 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2020-10-12 18:28:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:28:44,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2020-10-12 18:28:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:44,769 INFO L225 Difference]: With dead ends: 124 [2020-10-12 18:28:44,769 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 18:28:44,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:28:44,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 18:28:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-12 18:28:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 18:28:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-10-12 18:28:44,776 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 158 [2020-10-12 18:28:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:44,777 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-10-12 18:28:44,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:28:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-10-12 18:28:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 18:28:44,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:44,778 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:44,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 18:28:44,778 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:44,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:44,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1714088667, now seen corresponding path program 4 times [2020-10-12 18:28:44,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:44,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362009087] [2020-10-12 18:28:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:48,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:48,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-12 18:28:48,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3543 [2020-10-12 18:28:48,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:28:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:28:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:28:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:48,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:48,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:48,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:48,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:48,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:48,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:48,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:48,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:48,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:48,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:48,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:48,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:48,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:48,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:28:48,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:48,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:48,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:48,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:48,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:48,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:48,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:28:48,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:48,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 18:28:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:48,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:48,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:48,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:48,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:48,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:28:48,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:48,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:48,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:28:48,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:48,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:28:48,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362009087] [2020-10-12 18:28:48,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:48,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:28:48,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825075130] [2020-10-12 18:28:48,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:28:48,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:48,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:28:48,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:28:48,450 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 8 states. [2020-10-12 18:28:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:48,553 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2020-10-12 18:28:48,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:28:48,554 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-10-12 18:28:48,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:48,555 INFO L225 Difference]: With dead ends: 126 [2020-10-12 18:28:48,555 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 18:28:48,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:28:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 18:28:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-12 18:28:48,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 18:28:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-10-12 18:28:48,561 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 160 [2020-10-12 18:28:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:48,561 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-10-12 18:28:48,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:28:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-10-12 18:28:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 18:28:48,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:48,563 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:48,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 18:28:48,563 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:48,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1601343065, now seen corresponding path program 5 times [2020-10-12 18:28:48,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:48,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55474707] [2020-10-12 18:28:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:48,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:53,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 18:28:53,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4764 [2020-10-12 18:28:53,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:28:53,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:28:53,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:53,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:53,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:53,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:53,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:53,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:53,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:53,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:53,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:53,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:28:53,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:53,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:53,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:53,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:53,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:53,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:28:53,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:53,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 18:28:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:53,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:53,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:53,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:28:53,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:53,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:53,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:28:53,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:53,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:28:53,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55474707] [2020-10-12 18:28:53,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:53,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:28:53,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296782590] [2020-10-12 18:28:53,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:28:53,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:53,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:28:53,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:28:53,529 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 9 states. [2020-10-12 18:28:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:53,625 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2020-10-12 18:28:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:28:53,625 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 162 [2020-10-12 18:28:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:53,626 INFO L225 Difference]: With dead ends: 128 [2020-10-12 18:28:53,626 INFO L226 Difference]: Without dead ends: 77 [2020-10-12 18:28:53,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:28:53,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-12 18:28:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-12 18:28:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 18:28:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-12 18:28:53,636 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 162 [2020-10-12 18:28:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:53,636 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-12 18:28:53,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:28:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-12 18:28:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 18:28:53,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:53,637 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:53,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 18:28:53,638 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:53,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:53,638 INFO L82 PathProgramCache]: Analyzing trace with hash 627001943, now seen corresponding path program 6 times [2020-10-12 18:28:53,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:53,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126448800] [2020-10-12 18:28:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:58,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 18:28:58,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 18:28:58,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:28:58,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:28:58,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:58,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:58,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:58,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:58,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:58,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:58,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:58,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:58,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:58,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:28:58,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:58,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:58,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:58,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:58,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:58,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:28:58,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:58,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 18:28:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:58,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:58,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:58,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:28:58,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:58,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:58,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:28:58,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:58,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3771 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:28:58,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126448800] [2020-10-12 18:28:58,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:58,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:28:58,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628321821] [2020-10-12 18:28:58,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:28:58,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:58,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:28:58,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:28:58,844 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 10 states. [2020-10-12 18:28:58,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:58,955 INFO L93 Difference]: Finished difference Result 130 states and 135 transitions. [2020-10-12 18:28:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:28:58,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-10-12 18:28:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:58,957 INFO L225 Difference]: With dead ends: 130 [2020-10-12 18:28:58,957 INFO L226 Difference]: Without dead ends: 79 [2020-10-12 18:28:58,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:28:58,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-12 18:28:58,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-12 18:28:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-12 18:28:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-12 18:28:58,962 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 164 [2020-10-12 18:28:58,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:58,963 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-12 18:28:58,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:28:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-12 18:28:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-12 18:28:58,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:58,964 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:58,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 18:28:58,965 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:58,965 INFO L82 PathProgramCache]: Analyzing trace with hash 588054229, now seen corresponding path program 7 times [2020-10-12 18:28:58,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:58,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359861739] [2020-10-12 18:28:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:03,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-12 18:29:03,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 18:29:03,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:29:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:29:03,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:04,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:04,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:04,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:04,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:04,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:04,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:04,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:04,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:04,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:04,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:04,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:29:04,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:04,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:04,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:04,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:04,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:04,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:29:04,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 18:29:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:04,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:04,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:04,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 18:29:04,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:04,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:04,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:04,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359861739] [2020-10-12 18:29:04,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:04,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:29:04,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806115753] [2020-10-12 18:29:04,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:29:04,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:04,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:29:04,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:29:04,189 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 11 states. [2020-10-12 18:29:04,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:04,278 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2020-10-12 18:29:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:29:04,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2020-10-12 18:29:04,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:04,279 INFO L225 Difference]: With dead ends: 132 [2020-10-12 18:29:04,279 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 18:29:04,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:29:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 18:29:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-12 18:29:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-12 18:29:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-12 18:29:04,289 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 166 [2020-10-12 18:29:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:04,289 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-12 18:29:04,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:29:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-12 18:29:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 18:29:04,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:04,291 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:04,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 18:29:04,291 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:04,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1814006739, now seen corresponding path program 8 times [2020-10-12 18:29:04,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:04,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210618906] [2020-10-12 18:29:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 18:29:09,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5270 [2020-10-12 18:29:09,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:29:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:29:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:09,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:09,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:09,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:09,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:09,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:29:09,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:09,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:09,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:09,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:09,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:09,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:09,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:09,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 18:29:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:09,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:09,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:09,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:29:09,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:09,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:09,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3799 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:09,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210618906] [2020-10-12 18:29:09,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:09,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:29:09,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232731807] [2020-10-12 18:29:09,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:29:09,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:09,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:29:09,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:29:09,741 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 12 states. [2020-10-12 18:29:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:09,837 INFO L93 Difference]: Finished difference Result 134 states and 139 transitions. [2020-10-12 18:29:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:29:09,837 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2020-10-12 18:29:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:09,838 INFO L225 Difference]: With dead ends: 134 [2020-10-12 18:29:09,839 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 18:29:09,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:29:09,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 18:29:09,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-10-12 18:29:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 18:29:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-12 18:29:09,845 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 168 [2020-10-12 18:29:09,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:09,845 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-12 18:29:09,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:29:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-12 18:29:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 18:29:09,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:09,847 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:09,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 18:29:09,847 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:09,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1161637551, now seen corresponding path program 9 times [2020-10-12 18:29:09,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:09,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542413016] [2020-10-12 18:29:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:09,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:14,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:14,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 18:29:14,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-12 18:29:14,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:29:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:29:14,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:15,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:15,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:15,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:15,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:15,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:15,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:15,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:29:15,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-12 18:29:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:15,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:15,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:29:15,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:15,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542413016] [2020-10-12 18:29:15,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:15,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:29:15,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872023712] [2020-10-12 18:29:15,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:29:15,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:15,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:29:15,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:29:15,115 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand 13 states. [2020-10-12 18:29:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:15,255 INFO L93 Difference]: Finished difference Result 136 states and 141 transitions. [2020-10-12 18:29:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:29:15,255 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 170 [2020-10-12 18:29:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:15,257 INFO L225 Difference]: With dead ends: 136 [2020-10-12 18:29:15,257 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 18:29:15,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:29:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 18:29:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-10-12 18:29:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 18:29:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-10-12 18:29:15,267 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 170 [2020-10-12 18:29:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:15,267 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-10-12 18:29:15,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:29:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-10-12 18:29:15,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-12 18:29:15,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:15,272 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:15,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 18:29:15,273 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:15,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:15,273 INFO L82 PathProgramCache]: Analyzing trace with hash -307581105, now seen corresponding path program 10 times [2020-10-12 18:29:15,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:15,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839325958] [2020-10-12 18:29:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:20,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:20,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-12 18:29:20,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:29:20,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:29:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:29:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:20,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:20,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:20,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:20,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:20,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:20,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:20,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:20,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:20,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:20,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:20,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:29:20,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:20,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:20,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:20,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:20,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:20,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:20,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 18:29:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:20,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:20,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:20,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:20,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:29:20,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:20,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:20,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3835 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:20,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839325958] [2020-10-12 18:29:20,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:20,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:29:20,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203051886] [2020-10-12 18:29:20,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:29:20,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:20,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:29:20,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:29:20,481 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 14 states. [2020-10-12 18:29:20,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:20,611 INFO L93 Difference]: Finished difference Result 138 states and 143 transitions. [2020-10-12 18:29:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:29:20,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-12 18:29:20,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:20,613 INFO L225 Difference]: With dead ends: 138 [2020-10-12 18:29:20,613 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 18:29:20,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:29:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 18:29:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-12 18:29:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-12 18:29:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-12 18:29:20,619 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 172 [2020-10-12 18:29:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:20,619 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-12 18:29:20,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:29:20,619 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-12 18:29:20,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-12 18:29:20,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:20,620 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:20,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 18:29:20,621 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash 101909965, now seen corresponding path program 11 times [2020-10-12 18:29:20,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:20,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195181217] [2020-10-12 18:29:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:25,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:25,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-12 18:29:25,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-12 18:29:25,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:29:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:29:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:25,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:25,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:25,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:25,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:25,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:29:25,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:25,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:25,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:25,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:25,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:25,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:29:25,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:25,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:25,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:25,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:25,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:25,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:29:25,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 18:29:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:26,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:26,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:26,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:29:26,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:26,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:26,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195181217] [2020-10-12 18:29:26,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:26,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:29:26,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069413694] [2020-10-12 18:29:26,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:29:26,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:26,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:29:26,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:29:26,046 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-10-12 18:29:26,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:26,191 INFO L93 Difference]: Finished difference Result 140 states and 145 transitions. [2020-10-12 18:29:26,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:29:26,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2020-10-12 18:29:26,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:26,193 INFO L225 Difference]: With dead ends: 140 [2020-10-12 18:29:26,193 INFO L226 Difference]: Without dead ends: 89 [2020-10-12 18:29:26,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:29:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-12 18:29:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2020-10-12 18:29:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 18:29:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-12 18:29:26,200 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 174 [2020-10-12 18:29:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:26,200 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-12 18:29:26,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:29:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-12 18:29:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 18:29:26,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:26,201 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:26,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 18:29:26,202 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:26,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:26,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1514162997, now seen corresponding path program 12 times [2020-10-12 18:29:26,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:26,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580011902] [2020-10-12 18:29:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:26,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:26,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:31,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:29:31,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 18:29:31,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:29:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:29:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:31,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:31,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:31,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:31,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:31,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:31,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:31,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:31,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:31,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:31,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:31,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:31,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:29:31,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:31,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:31,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:31,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 18:29:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:31,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:31,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:29:31,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:31,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:31,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580011902] [2020-10-12 18:29:31,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:31,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:29:31,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174084694] [2020-10-12 18:29:31,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:29:31,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:31,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:29:31,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:29:31,492 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 16 states. [2020-10-12 18:29:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:31,658 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2020-10-12 18:29:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:29:31,659 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 176 [2020-10-12 18:29:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:31,660 INFO L225 Difference]: With dead ends: 142 [2020-10-12 18:29:31,660 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 18:29:31,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:29:31,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 18:29:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-10-12 18:29:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-12 18:29:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-12 18:29:31,666 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 176 [2020-10-12 18:29:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:31,666 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-12 18:29:31,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:29:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-12 18:29:31,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-12 18:29:31,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:31,668 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:31,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 18:29:31,668 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:31,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:31,668 INFO L82 PathProgramCache]: Analyzing trace with hash 217881673, now seen corresponding path program 13 times [2020-10-12 18:29:31,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:31,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408548017] [2020-10-12 18:29:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:36,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:36,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-12 18:29:36,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:36,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-12 18:29:36,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:29:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:36,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:29:36,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:36,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:36,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:36,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:36,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:36,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:36,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:36,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:36,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:36,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:36,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:36,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:36,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:36,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:29:36,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-12 18:29:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:36,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:36,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:29:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:36,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3904 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:37,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408548017] [2020-10-12 18:29:37,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:37,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:29:37,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684533086] [2020-10-12 18:29:37,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:29:37,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:37,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:29:37,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:29:37,018 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 17 states. [2020-10-12 18:29:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:37,148 INFO L93 Difference]: Finished difference Result 144 states and 149 transitions. [2020-10-12 18:29:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:29:37,149 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 178 [2020-10-12 18:29:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:37,150 INFO L225 Difference]: With dead ends: 144 [2020-10-12 18:29:37,151 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 18:29:37,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:29:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 18:29:37,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-10-12 18:29:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-12 18:29:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-12 18:29:37,161 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 178 [2020-10-12 18:29:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:37,162 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-12 18:29:37,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:29:37,162 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-12 18:29:37,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 18:29:37,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:37,163 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:37,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 18:29:37,163 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:37,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1734501305, now seen corresponding path program 14 times [2020-10-12 18:29:37,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:37,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696354924] [2020-10-12 18:29:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:42,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:42,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-12 18:29:42,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-12 18:29:42,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:29:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:42,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:29:42,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:29:42,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:42,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:42,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:42,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:42,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:42,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:42,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:42,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:42,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:42,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:42,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:42,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:42,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:42,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:42,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:42,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:42,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:42,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:42,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:42,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 18:29:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:42,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3931 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:42,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696354924] [2020-10-12 18:29:42,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:42,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:29:42,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754749548] [2020-10-12 18:29:42,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:29:42,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:42,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:29:42,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:29:42,535 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 18 states. [2020-10-12 18:29:42,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:42,711 INFO L93 Difference]: Finished difference Result 146 states and 151 transitions. [2020-10-12 18:29:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:29:42,711 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 180 [2020-10-12 18:29:42,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:42,712 INFO L225 Difference]: With dead ends: 146 [2020-10-12 18:29:42,713 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 18:29:42,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:29:42,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 18:29:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2020-10-12 18:29:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 18:29:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2020-10-12 18:29:42,718 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 180 [2020-10-12 18:29:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:42,719 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2020-10-12 18:29:42,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:29:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2020-10-12 18:29:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 18:29:42,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:42,720 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:42,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 18:29:42,721 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:42,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1073834811, now seen corresponding path program 15 times [2020-10-12 18:29:42,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:42,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493736196] [2020-10-12 18:29:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:42,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:47,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:47,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 18:29:47,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-12 18:29:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:29:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:29:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:48,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:48,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:48,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:48,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:48,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:48,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:48,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:48,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:48,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:48,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:29:48,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:48,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:48,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:48,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:48,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:48,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:48,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-12 18:29:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:48,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:48,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:29:48,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:48,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:48,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493736196] [2020-10-12 18:29:48,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:48,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:29:48,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887913286] [2020-10-12 18:29:48,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:29:48,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:48,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:29:48,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:29:48,095 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand 19 states. [2020-10-12 18:29:48,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:48,300 INFO L93 Difference]: Finished difference Result 148 states and 153 transitions. [2020-10-12 18:29:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:29:48,300 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 182 [2020-10-12 18:29:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:48,301 INFO L225 Difference]: With dead ends: 148 [2020-10-12 18:29:48,302 INFO L226 Difference]: Without dead ends: 97 [2020-10-12 18:29:48,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:29:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-12 18:29:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-12 18:29:48,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-12 18:29:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2020-10-12 18:29:48,308 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 182 [2020-10-12 18:29:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:48,308 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2020-10-12 18:29:48,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:29:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2020-10-12 18:29:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-12 18:29:48,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:48,310 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:48,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 18:29:48,310 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:48,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1828493885, now seen corresponding path program 16 times [2020-10-12 18:29:48,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:48,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146314930] [2020-10-12 18:29:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:48,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:48,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-12 18:29:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5305 [2020-10-12 18:29:53,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:29:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:29:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:53,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:53,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:29:53,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:53,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:53,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:29:53,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:53,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:53,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:29:53,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 18:29:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:53,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:53,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:53,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:29:53,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3991 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:53,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146314930] [2020-10-12 18:29:53,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:53,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 18:29:53,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698389520] [2020-10-12 18:29:53,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 18:29:53,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:53,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 18:29:53,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:29:53,952 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand 20 states. [2020-10-12 18:29:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:54,092 INFO L93 Difference]: Finished difference Result 150 states and 155 transitions. [2020-10-12 18:29:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:29:54,092 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 184 [2020-10-12 18:29:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:54,094 INFO L225 Difference]: With dead ends: 150 [2020-10-12 18:29:54,094 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 18:29:54,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:29:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 18:29:54,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-12 18:29:54,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 18:29:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-12 18:29:54,100 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 184 [2020-10-12 18:29:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:54,101 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-12 18:29:54,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 18:29:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-12 18:29:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-12 18:29:54,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:54,102 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 17, 17, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:54,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 18:29:54,103 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:54,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:54,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1206390975, now seen corresponding path program 17 times [2020-10-12 18:29:54,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:54,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402092626] [2020-10-12 18:29:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:54,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:59,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:59,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-12 18:29:59,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:29:59,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:29:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:29:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:29:59,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:59,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:59,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:59,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:59,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:59,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:59,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:59,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:59,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:59,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:59,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:59,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:29:59,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:59,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:59,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:29:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:59,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:59,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:59,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:59,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:29:59,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:59,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:59,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:59,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:59,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:59,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 18:29:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:59,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:59,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:59,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:29:59,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:29:59,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:29:59,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4024 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:29:59,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402092626] [2020-10-12 18:29:59,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:59,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:29:59,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162837165] [2020-10-12 18:29:59,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:29:59,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:59,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:29:59,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:29:59,442 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 21 states. [2020-10-12 18:29:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:59,658 INFO L93 Difference]: Finished difference Result 152 states and 157 transitions. [2020-10-12 18:29:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:29:59,658 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 186 [2020-10-12 18:29:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:59,660 INFO L225 Difference]: With dead ends: 152 [2020-10-12 18:29:59,660 INFO L226 Difference]: Without dead ends: 101 [2020-10-12 18:29:59,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:29:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-12 18:29:59,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-12 18:29:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 18:29:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-12 18:29:59,665 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 186 [2020-10-12 18:29:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:59,665 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-12 18:29:59,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:29:59,666 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-12 18:29:59,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 18:29:59,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:59,667 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:59,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 18:29:59,667 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:59,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:59,668 INFO L82 PathProgramCache]: Analyzing trace with hash -365948609, now seen corresponding path program 18 times [2020-10-12 18:29:59,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:59,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351819587] [2020-10-12 18:29:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:04,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 18:30:04,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-12 18:30:04,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:30:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 18:30:04,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:30:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:05,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:05,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:05,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:05,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:30:05,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:05,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:05,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:05,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:05,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:30:05,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:30:05,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:30:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:05,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:05,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:30:05,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:05,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:30:05,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:05,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 18:30:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:05,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:05,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:05,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:30:05,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:05,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:30:05,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:30:05,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:05,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4059 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 3735 trivial. 0 not checked. [2020-10-12 18:30:05,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351819587] [2020-10-12 18:30:05,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:05,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:30:05,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536668723] [2020-10-12 18:30:05,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:30:05,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:05,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:30:05,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:30:05,182 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 22 states. [2020-10-12 18:30:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:05,332 INFO L93 Difference]: Finished difference Result 153 states and 158 transitions. [2020-10-12 18:30:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:30:05,332 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 188 [2020-10-12 18:30:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:05,333 INFO L225 Difference]: With dead ends: 153 [2020-10-12 18:30:05,333 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 18:30:05,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:30:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 18:30:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-12 18:30:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-12 18:30:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-10-12 18:30:05,339 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 188 [2020-10-12 18:30:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:05,339 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-10-12 18:30:05,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:30:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-10-12 18:30:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-12 18:30:05,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:05,341 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:05,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 18:30:05,342 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:05,343 INFO L82 PathProgramCache]: Analyzing trace with hash -154686531, now seen corresponding path program 19 times [2020-10-12 18:30:05,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:05,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741460945] [2020-10-12 18:30:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking...